Synchronous Motor Operation

When working as a synchronous electric motor, the electric power is supplied to the machine by means of the application of three-phase alternating voltages at the terminals of the stator windings, considering that the rotor field windings are fed by a continuous voltage source.

Thus, by means of the spatial arrangement of the windings in the stator, these time-varying magnetic fields can also be driven by the stator so that the resulting magnetic field rotates around the circumference of the stator with regular angular velocity, according to the frequency of the voltage alternately applied in the windings.      5600 OHP

This field that passes around the circumference of the stator is also called the rotating field. In this way, the moment one of the poles of the constant magnetic field produced by the rotor field winding interacts with the resulting rotating field of the stator, it will align with the opposite pole.

Considering that the voltages applied to the stator windings are alternating and three-phase, a three-phase array of alternating currents with the same frequency as the voltage can be traversed in them, causing these three-phase currents to cause alternating magnetic fields capable of varying in time.




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